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648 - Subject Added Entry-Chronological Term (R)


MARC 21 Community Information - Concise
2007

Subject entry in which the first element is a chronological term.

Indicators
First - Undefined
# - Undefined
Second - ThesaurusThesaurus or authority file from which the heading came.
0 - Library of Congress Subject Headings
1 - LC subject headings for children's literature
2 - Medical Subject Headings
3 - National Agricultural Library subject authority file
4 - Source not specified
5 - Canadian Subject Headings
6 - Répertoire de vedettes-matière
7 - Source specified in subfield $2
Subfield Codes
$a - Chronological term (NR)
$v - Form subdivision (R)
$x - General subdivision (R)
$y - Chronological subdivision (R)
$z - Geographic subdivision (R)
$0 - Authority record control number (R)
See description of this subfield in Appendix A: Control Subfields.
$2 - Source of heading or term (NR)
Code from: Subject Heading and Term Source Codes.
$3 - Materials specified (NR)
$6 - Linkage (NR)
$8 - Field link and sequence number (R)
Examples
648 #7$a1900-1999$2fast
648 #7$a1862$2fast
648 #7$a1800-1899$2fast

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